CN109505713A - A kind of novel pressure regulating system - Google Patents
A kind of novel pressure regulating system Download PDFInfo
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- CN109505713A CN109505713A CN201811527191.1A CN201811527191A CN109505713A CN 109505713 A CN109505713 A CN 109505713A CN 201811527191 A CN201811527191 A CN 201811527191A CN 109505713 A CN109505713 A CN 109505713A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000007789 gas Substances 0.000 claims abstract description 58
- 230000033228 biological regulation Effects 0.000 claims abstract description 57
- 239000003345 natural gas Substances 0.000 claims abstract description 51
- 239000000446 fuel Substances 0.000 claims abstract description 26
- 230000009977 dual effect Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 206010022000 influenza Diseases 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 239000002283 diesel fuel Substances 0.000 abstract description 10
- 230000004224 protection Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006837 decompression Effects 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- -1 meanwhile Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention belongs to diesel oil and natural gas double-fuel spraying system technical field, and in particular to a kind of novel pressure regulating system.The novel pressure regulating system, including compressed natural gas, check valve, relief valve, switch valve, regulation valve body and dual fuel injector, the compressed natural gas by relief valve and switch valve respectively on regulation valve body the first air flue and air inlet be connected to, first air flue is connected to third air flue, fuel feed hole on the gas outlet and valve union on regulation valve body passes through gas rail respectively and diesel common rail system is connected to dual fuel injector, gas outlet is connected to by filter with gas rail, the second air flue and third air flue on the regulation valve body are connected to pressure sensor and natural gas collecting tank respectively.The beneficial effect is that: the pressure that can be effectively prevented in system is excessive, and can prevent the reflux of natural gas；It realizes decompression protection when gas pressure is excessive to system, is double design protections, securely and reliably.
Description
Technical field
The invention belongs to diesel oil and natural gas double-fuel spraying system technical field, and in particular to a kind of novel pressure adjusting
System.
Background technique
Currently marketed medium-weight vehicle mainly uses diesel oil as fuel, this kind of burning efficiency of internal combustion engine is substantially low
High pressure direct injection natural gas in cylinder technology (i.e. high-pressure common rail in 39%, with the publication of six discharge standard of state, using diesel oil as single-fuel
System) matching cost and technical difficulty gradually increase, while also bringing the growth in cost.
With the adjustment of national energy structure, and the promotion to emission request, traditional with gasoline and diesel oil is burning
The internal combustion engine of medium will gradually decrease.Natural gas is abundant in china natural resources, gradually starts to be applied to as the alternative fuel of diesel oil
Automobile market.But current natural gas internal combustion engine is gas-duct jetting, is lighted by spark plug, efficiency of combustion is lower than
39%, and discharge and be difficult to meet the emission request gradually promoted.
A kind of in-cylinder direct-jet technology of achievable dual fuel injection can effectively improve burning by the way of compression ignition
Efficiency.The double fuel direct injection technology first sprays a small amount of diesel oil in the combustion chamber, after compression ignition, is promoted in combustion in IC engine room
Temperature, ignite the natural gas then sprayed, then carries out work by combustion, the technology, can by efficiency of combustion promoted to 42% and
PM value and the discharge of NOx can be reduced, more to clean, more economical fuel injection system for IC engine.
In above-mentioned double fuel in-cylinder direct-jet system, there is the pressure regulating system for controlling gas pressure, but press
Draught control system is more demanding to pressure controling precision, and there are no the products of mature pressure regulating system currently on the market, greatly
Portioned product is still in sample stage, and its structure is complicated, processing difficulties, gas pressure to the followability of diesel pressure compared with
Difference, pressure difference is unstable, easy to wear, and existing product performance and reliability can not meet the requirement of dual fuel injection system.
Summary of the invention
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of to overcome the novel of defect of the existing technology
Pressure regulating system.
The present invention is achieved through the following technical solutions:
A kind of novel pressure regulating system, including compressed natural gas, check valve, relief valve, switch valve, regulation valve body and double fuel
Injector, the compressed natural gas by relief valve and switch valve respectively on regulation valve body the first air flue and air inlet connect
Logical, the first air flue is connected to third air flue, and the fuel feed hole on the gas outlet and valve union on regulation valve body passes through gas respectively
Rail and diesel common rail system are connected to dual fuel injector, and gas outlet is connected to by filter with gas rail, on the regulation valve body
The second air flue and third air flue be connected to respectively with pressure sensor and natural gas collecting tank.
Further, piston is equipped in the regulation valve body, piston and regulation valve body form piston air cavity, regulation valve body bottom
Equipped with the second air flue and third air flue, piston air cavity is connected to the second air flue, and third air flue is corresponded in regulation valve body equipped with valve seat
Component, the piston is interior to be equipped with valve rod, and valve rod one end is located in valve base part, and other end of top surface is by passing through piston spring
Spring force, be pressed on piston inner face；Valve base part passes through the spring force of valve rod spring, and steel ball is pressed on regulation valve body
On regulation valve body sealing cone, oil pocket is formed between the valve union and piston, respectively corresponded on regulation valve body oil pocket, piston into
Port and piston gap are equipped with oil outlet, air inlet and air outlet.
Further, the regulation valve body inner wall corresponds to air inlet and air outlet and is respectively equipped with air inlet annular groove and out compression,
Air inlet is connected to air inlet annular groove, and gas outlet is connected to compression out.
Further, the piston is located at oil pocket one end and is cased with support ring and sealing ring.
Further, end-face seal ring is equipped between the valve union and regulation valve body.
Further, the piston intake mouth and piston gap are located on piston, piston intake mouth and piston gap point
It is not connected to piston air cavity.
Further, third air flue is corresponded on the valve base part equipped with steel ball, valve base part and steel ball are interference fit.
Further, the compressed natural gas is connected to by check valve with relief valve and switch valve.
The beneficial effects of the present invention are:
(1) pressure regulating system of the invention is equipped with check valve, switch valve, relief valve, pressure-regulating valve, can be effectively prevented and is
Pressure in system is excessive, and can prevent the reflux of natural gas；
(2) relief valve of the invention and pressure-regulating valve can be achieved gas pressure it is excessive when to the decompression protection of system, be
Double design protections, securely and reliably.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Attached drawing 1 is pressure regulating system schematic diagram when inventive combustion engine works；
Attached drawing 2 is pressure regulating system schematic diagram when inventive combustion engine is shut down.
In figure, 1 compressed natural gas, 2 check valves, 3 relief valves, 4 switch valves, 5 natural gas collecting tanks, 6 pressure sensors, 7
Filter, 8 gas rails, 9 dual fuel injectors, 10 diesel common rail systems, 11 regulation valve bodies, 12 pistons, 13 valve rods, 14 seat portions
Part, 15 piston springs, 16 valve rod springs, 17 sealing rings, 18 support rings, 19 valve unions, 20 end-face seal rings, 21 air inlets, 22
Air inlet annular groove, 23 piston intake mouths, 24 piston air cavitys, 25 gas outlets, 26 oil pockets, 27 fuel feed holes, 28 oil outlets, 29 first gas
Road, 30 regulation valve body sealing cones, 31 second air flues, 32 third air flues, 33 valve stem spacing planes.
Specific embodiment
Attached drawing 1-2 is a kind of specific embodiment of the invention.A kind of novel pressure regulating system of the invention, including compression day
Right gas 1, relief valve 3, switch valve 4, regulation valve body 11 and dual fuel injector 9, the compressed natural gas 1 pass through 3 He of relief valve
Switch valve 4 respectively on regulation valve body 11 the first air flue 29 and air inlet 21 be connected to, the first air flue 29 connects with third air flue 32
Logical, the fuel feed hole 27 on the gas outlet 25 and valve union 19 on regulation valve body 11 passes through gas rail 8 and diesel common rail system respectively
System 10 is connected to dual fuel injector 9, and gas outlet 25 is connected to by filter 7 with gas rail 8, second on the regulation valve body 11
Air flue 31 and third air flue 32 are connected to pressure sensor 6 and natural gas collecting tank 5 respectively.
Further, piston 12 is equipped in the regulation valve body 11, piston 12 and regulation valve body 11 form piston air cavity 24, adjust
It saves 11 bottom of valve body and is equipped with the second air flue 31 and third air flue 32, piston air cavity 24 is connected to the second air flue 31, regulation valve body 11
Interior corresponding third air flue 32 is equipped with valve base part 14, is equipped with valve rod 13 in the piston 12,13 one end of valve rod is located at valve base part
In 14, other end of top surface is pressed on 12 inner face of piston by the spring force by piston spring 15；Valve base part 14 is logical
Steel ball is pressed on the regulation valve body sealing cone 30 of regulation valve body 11 by the spring force for crossing valve rod spring 16, the valve union
Oil pocket 26 is formed between 19 and piston 12, and oil pocket 26, piston intake mouth 23 and piston 12 are respectively corresponded on regulation valve body 11 and is open
Equipped with oil outlet 28, air inlet 21 and gas outlet 25.
Further, 11 inner wall of regulation valve body corresponds to air inlet 21 and gas outlet 25 is respectively equipped with air inlet annular groove 22 and goes out
Compression, air inlet 21 are connected to air inlet annular groove 22, and gas outlet 25 is connected to compression out.
Further, the piston 12 is located at 26 one end of oil pocket and is cased with support ring 18 and sealing ring 17.
Further, end-face seal ring 20 is equipped between the valve union 19 and regulation valve body 11.
Further, the piston intake mouth 23 and the opening of piston 12 are located on piston 12, piston intake mouth 23 and work
12 opening of plug is connected to piston air cavity 24 respectively.
Further, third air flue 32 is corresponded on the valve base part 14 equipped with steel ball, valve base part 14 and steel ball are interference
Cooperation.
Further, the compressed natural gas 1 is connected to by check valve 2 with relief valve 3 and switch valve 4.
A kind of novel pressure regulating system of the invention is equipped with check valve 2 in pressure regulating system, compressed natural gas 1
Gas pressure, greater than the resultant force of 2 spring force of check valve and the gas pressure of 4 side of switch valve, ball valve is opened, and natural gas passes through unidirectional
Valve 2 flows to 4 direction of switch valve；The gas pressure of compressed natural gas 1, less than the gas pressure of 2 spring force of check valve and 4 side of switch valve
The resultant force of power, ball valve are closed, and check valve 2 prevents the natural gas in 4 direction of switch valve, are flowed back to compressed natural gas 1, and in pressure tune
Relief valve 3, the gas pressure of 2 side of check valve, less than the gas of 29 side of 3 spring force of relief valve and the first air flue are equipped in section system
The resultant force of body pressure, ball valve are closed, so that natural gas flow is to 4 direction of switch valve；The gas pressure of 2 side of check valve is excessive, greatly
In the resultant force of the gas pressure of 3 the first air flue of spring force of relief valve, 29 side, ball valve is opened, and natural gas flow is passed through to the first air flue 29
Third air flue 32 is crossed, is flowed in natural gas collecting tank 5, so that gas pressure is excessive in anti-locking system, to the normal work of system
It damages.
Switch valve 4 is equipped in pressure regulating system, when working normally internal combustion engine, switch valve 4 is opened, and natural gas flow is to tune
Valve body 11, filter 7, gas rail 8 are saved, to provide stable compressed natural gas for dual fuel injector 9；When engine shutdown,
Switch valve 4 is closed, and the channel between compressed natural gas 1 and regulation valve body 11 is cut off, and switch valve 4 is acted on by internal structure, can
Flowed back when preventing that pressure is excessive in piston air cavity 24 to 4 front passage of switch valve.
Natural gas collecting tank 5 is equipped in pressure regulating system, the pressure release gas in third air flue 32 is by natural gas collecting tank 5
It collects to do him and use, and a large amount of natural gas straights can be effectively prevented to run in and cause damages into air.
Pressure sensor 6 is equipped in pressure regulating system, the gas pressure in piston air cavity 24 passes through the second air flue 31
It is perceived by pressure sensor 6, so that the pressure change signal in piston air cavity 24 is passed to system ECU, is monitoring pressure
When abnormal, ECU can send a signal to switch valve 4, cut off the access of natural gas, carry out stoppage protection.
Filter 7 is equipped in pressure regulating system, to filter the impurity such as the moisture in natural gas, filtered natural gas is logical
Into gas rail 8.
In pressure regulating system, it is equipped with pressure-regulating valve component, by regulation valve body 11, piston 12, valve rod 13, seat portion
Part 14, piston spring 15, valve rod spring 16, valve union 19 form, and are stablized with adjusting gas pressure in certain pressure differential range
Interior, piston 12 is matched with regulation valve body 11, and sealing ring 17 and support ring 18 are equipped on piston 12, is realized to diesel oil and day
Sealing between right gas, to avoid the mutual pollution of bavin oil and gas two media.In regulation valve body 11 and valve union 19
Between be equipped with sealing ring 20, to prevent the leakage of diesel oil, meanwhile, steel ball and valve base part are fitted in one by interference fit
It rises, forms valve base part 14；Valve rod 13 is assemblied in valve base part 14 by the opening of valve base part 14；The upper top of valve rod 13
Face is pressed on 12 inner face of piston by the spring force of piston spring 15；Valve base part 14 passes through the spring of valve rod spring 16
Steel ball is pressed on regulation valve body sealing cone 30 by power；Piston 12 is matched with regulation valve body 11, and valve rod is equipped in piston 12
13, valve base part 14, piston spring 15, valve rod spring 16, piston 12 and regulation valve body 11 form piston air cavity 24, valve union
19, the upper top surface of regulation valve body 11 and piston 12 forms oil pocket 26, and piston 12 can be transported up and down under the action of piston spring 15
Dynamic, with the up and down motion of piston 12, the circulation area between piston intake mouth 23 and air inlet annular groove 22 can be accordingly increased
Or reduce, to adjust the air inflow of natural gas.
After high-pressure diesel enters oil pocket 26 from the fuel feed hole 27 of valve union 19, diesel pressure rises in oil pocket 26, thus
Piston 12 is pushed to move downward, piston 12 pushes valve rod 13 to move downward by the contact of top surface on valve rod 13, lives at this time
It fills in port 23 and relative motion occurs for air inlet annular groove 22, with moving downward for piston 12, piston intake mouth 23 and air inlet ring
Slot 22 gradually communicates, and circulation area gradually increases, and high-pressure natural gas passes through air inlet 21, air inlet annular groove 22 and piston intake
Mouth 23 flows into piston air cavity 24, reversed axial force is generated to piston 12, finally, the gas pressure in piston air cavity 24, oil
Diesel pressure and spring force in chamber 26, three power generate balance, so that gas pressure is stable and is limited in a certain range
Interior, the gas of the steady pressure enters the gentle rail 8 of filter 7 by gas outlet 25, to realize the natural pressure in gas rail 8
Power variation synchronous with the diesel pressure in diesel common rail system 10, when diesel pressure is excessive, piston 12 continues to move downward, pole
Under limit state, the limit face contact of piston bottom surface and regulation valve body 11,12 stop motion of piston.
Conversely, the diesel pressure in oil pocket 26 declines, and piston 12 is transported upwards when the diesel pressure decline in fuel feed hole 27
Dynamic, piston intake mouth 23 and the circulation area of air inlet annular groove 22 gradually decrease, thus diesel pressure, gas pressure and spring force
Reach new balance, the final gas pressure realized in gas rail 8 also corresponding change.
When the natural pressure fluctuation in piston air cavity 24 is excessive, it is excessive to will cause about 12 pressure difference of piston, piston 12
Continue upward movement, piston intake mouth 23 and the circulation area of air inlet annular groove 22 gradually decrease, until piston intake mouth 23 with into
Compression 22 is detached from, the cutting of natural gas inlet channel.If piston 12 continues up, valve stem spacing plane 33 and valve base part
14 contacts, when continuing up, valve rod 13 drives valve base part 14 to move upwards, and steel ball and regulation valve body sealing cone 30 are de-
From piston air cavity 24 is communicated with third air flue 32, and natural gas flow is to natural gas collecting tank 5, to make the day in piston air cavity 24
Right atmospheric pressure reduces.After the 24 part pressure release of piston air cavity, gas cavity pressure is reduced, and piston 12 moves downward, valve base part 14
Steel ball is contacted with regulation valve body sealing cone 30, and piston air cavity 24 recloses, thus gas pressure, diesel pressure and spring
Power reaches new balance.
In engine shutdown, switch valve 4 is closed, and cuts off the channel between compressed natural gas 1 and regulation valve body 11, together
When, diesel pressure drastically reduces in diesel common rail system 10, and the diesel pressure in diesel oil feeding hole 27 drastically reduces, and piston 12 is held
Continuous to move upwards, piston 12 and valve rod 13 are moved upwards by the spring-force driven dual of piston spring 15, piston intake mouth 23 and air inlet
The circulation area of annular groove 22 gradually decreases, until piston intake mouth 23 and air inlet annular groove 22 are detached from, the cutting of natural gas inlet channel.
If piston 12 continues up, valve stem spacing plane 33 is contacted with valve base part 14.When continuing up, valve rod 13 is driven
Valve base part 14 moves upwards, and steel ball and regulation valve body sealing cone 30 are detached from, and piston air cavity 24 is communicated with third air flue 32, day
Right air-flow is to natural gas collecting tank 5, to realize the pressure release of natural gas in piston air cavity 24, communicated with piston air cavity 24 into
Port 21, gas outlet 25, filter 7, the gas in gas rail 8 can carry out pressure release together.When continuing up, piston intake mouth
23 are detached from air inlet annular groove 22, close natural gas inlet channel.Finally, top surface connects with 19 lower end surface of valve union on piston 12
Touching, 12 stop motion of piston.
The present invention is not limited to the above-described embodiments, anyone should learn make under the inspiration of the present invention with the present invention
With same or similar technical solution, fall within the scope of protection of the present invention.
Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (8)
1. a kind of novel pressure regulating system, including compressed natural gas, check valve, relief valve, switch valve, regulation valve body and double combustions
Material ejector, characterized in that the compressed natural gas by relief valve and switch valve respectively with the first air flue on regulation valve body
It is connected to air inlet, the first air flue is connected to third air flue, the fuel feed hole on the gas outlet and valve union on regulation valve body
It is connected to respectively by gas rail and diesel common rail system with dual fuel injector, gas outlet is connected to by filter with gas rail, described
The second air flue and third air flue on regulation valve body are connected to pressure sensor and natural gas collecting tank respectively.
2. a kind of novel pressure regulating system according to claim 1 is lived it is characterized in that: being equipped in the regulation valve body
Plug, piston and regulation valve body form piston air cavity, and regulation valve body bottom is equipped with the second air flue and third air flue, piston air cavity and the
Two air flues are connected to, and third air flue are corresponded in regulation valve body equipped with valve base part, the piston is interior to be equipped with valve rod, and valve rod one end is located at
In valve base part, other end of top surface is pressed on piston inner face by the spring force by piston spring；Valve base part is logical
Steel ball is pressed on the regulation valve body sealing cone of regulation valve body by the spring force for crossing valve rod spring, the valve union and piston
Between form oil pocket, respectively corresponded on regulation valve body oil pocket, piston intake mouth and piston gap equipped with oil outlet, air inlet and go out
Port.
3. a kind of novel pressure regulating system according to claim 1 or 2, it is characterized in that: the regulation valve body inner wall pair
It answers air inlet and air outlet to be respectively equipped with air inlet annular groove and compression, air inlet is connected to air inlet annular groove out, gas outlet and outlet
Annular groove connection.
4. a kind of novel pressure regulating system according to claim 2, it is characterized in that: the piston is located at one end cap of oil pocket
There are support ring and sealing ring.
5. a kind of novel pressure regulating system according to claim 2, it is characterized in that: the valve union and regulation valve body it
Between be equipped with end-face seal ring.
6. a kind of novel pressure regulating system according to claim 2, it is characterized in that: the piston intake mouth and piston are opened
Mouth is located on piston, and piston intake mouth and piston gap are connected to piston air cavity respectively.
7. a kind of novel pressure regulating system according to claim 2, it is characterized in that: corresponding to third on the valve base part
Air flue is equipped with steel ball, and valve base part and steel ball are interference fit.
8. a kind of novel pressure regulating system according to claim 1, it is characterized in that: the compressed natural gas passes through unidirectionally
Valve is connected to relief valve and switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527191.1A CN109505713A (en) | 2018-12-13 | 2018-12-13 | A kind of novel pressure regulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527191.1A CN109505713A (en) | 2018-12-13 | 2018-12-13 | A kind of novel pressure regulating system |
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| Publication Number | Publication Date |
|---|---|
| CN109505713A true CN109505713A (en) | 2019-03-22 |
Family
ID=65752566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811527191.1A Pending CN109505713A (en) | 2018-12-13 | 2018-12-13 | A kind of novel pressure regulating system |
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| CN (1) | CN109505713A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118137A (en) * | 2019-04-24 | 2019-08-13 | 英嘉动力科技无锡有限公司 | A kind of gaseous fuel injection system |
| CN110792516A (en) * | 2019-09-30 | 2020-02-14 | 潍柴动力股份有限公司 | Pressure adjusting device of dual-fuel engine and dual-fuel engine with pressure adjusting device |
| CN111677609A (en) * | 2020-06-09 | 2020-09-18 | 一汽解放汽车有限公司 | Dual-fuel system and vehicle |
| CN114992020A (en) * | 2022-05-10 | 2022-09-02 | 潍柴动力股份有限公司 | Method and device for determining fuel rail pressure of HPDI engine and controller of vehicle |
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| US6443129B1 (en) * | 1999-10-14 | 2002-09-03 | Robert Bosch Gmbh | Pressure booster for a fuel injection system for internal combustion engines, with hydraulically reinforced refilling |
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| CN204420205U (en) * | 2015-01-27 | 2015-06-24 | 潍柴西港新能源动力有限公司 | Duel fuel engine pressure regulator |
| CN105756821A (en) * | 2016-04-21 | 2016-07-13 | 哈尔滨工程大学 | Combined non-pressurized fuel oil and pressurized fuel gas dual piezoelectric mixed fuel injection device |
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| CN209293928U (en) * | 2018-12-13 | 2019-08-23 | 英嘉动力科技无锡有限公司 | A kind of novel pressure regulating system |
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- 2018-12-13 CN CN201811527191.1A patent/CN109505713A/en active Pending
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|---|---|---|---|---|
| CN2085010U (en) * | 1991-01-28 | 1991-09-18 | 重庆建筑工程学院 | Pressure reducing valve of compressed natural gas for automobiles using petrol and natural gas as fuel |
| US6443129B1 (en) * | 1999-10-14 | 2002-09-03 | Robert Bosch Gmbh | Pressure booster for a fuel injection system for internal combustion engines, with hydraulically reinforced refilling |
| CN103573516A (en) * | 2012-07-20 | 2014-02-12 | 卡特彼勒公司 | Diesel fuel leakage control system for dual fuel injector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118137A (en) * | 2019-04-24 | 2019-08-13 | 英嘉动力科技无锡有限公司 | A kind of gaseous fuel injection system |
| CN110792516A (en) * | 2019-09-30 | 2020-02-14 | 潍柴动力股份有限公司 | Pressure adjusting device of dual-fuel engine and dual-fuel engine with pressure adjusting device |
| CN111677609A (en) * | 2020-06-09 | 2020-09-18 | 一汽解放汽车有限公司 | Dual-fuel system and vehicle |
| CN114992020A (en) * | 2022-05-10 | 2022-09-02 | 潍柴动力股份有限公司 | Method and device for determining fuel rail pressure of HPDI engine and controller of vehicle |
| CN114992020B (en) * | 2022-05-10 | 2024-03-19 | 潍柴动力股份有限公司 | Method and device for determining fuel rail pressure of HPDI engine and controller of vehicle |
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